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#arp

2 posts

FreeBSDDeep Dive October 3, 2026 8 min read

FreeBSD ARP Cache Operations: Trace IPv4 Neighbor Resolution on Ethernet

Diagnose FreeBSD IPv4 reachability by checking routes, per-interface ARP entries, duplicate-address symptoms, and packet exchanges before clearing state.

#freebsd#arp#ethernet

LinuxDeep Dive October 3, 2026 8 min read

Linux ARP and Neighbor Tables: Diagnose Resolution Without Blind Flushing

Trace Linux IPv4 ARP and IPv6 neighbor-resolution failures through routes, NUD states, link-layer captures, namespaces, and safe recovery tests.

#linux#networking#arp